diff options
Diffstat (limited to 'test/core/end2end/fuzzers/client_fuzzer.c')
| -rw-r--r-- | test/core/end2end/fuzzers/client_fuzzer.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/test/core/end2end/fuzzers/client_fuzzer.c b/test/core/end2end/fuzzers/client_fuzzer.c new file mode 100644 index 0000000000..4e22e268f0 --- /dev/null +++ b/test/core/end2end/fuzzers/client_fuzzer.c @@ -0,0 +1,154 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/grpc.h> +#include <grpc/support/alloc.h> + +#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h" +#include "src/core/lib/surface/channel.h" +#include "test/core/util/mock_endpoint.h" + +static const bool squelch = true; + +static void discard_write(gpr_slice slice) {} + +static void *tag(int n) { return (void *)(uintptr_t)n; } + +static void dont_log(gpr_log_func_args *args) {} + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + grpc_test_only_set_metadata_hash_seed(0); + if (squelch) gpr_set_log_function(dont_log); + grpc_init(); + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; + + grpc_endpoint *mock_endpoint = grpc_mock_endpoint_create(discard_write); + + grpc_completion_queue *cq = grpc_completion_queue_create(NULL); + grpc_transport *transport = + grpc_create_chttp2_transport(&exec_ctx, NULL, mock_endpoint, 1); + grpc_chttp2_transport_start_reading(&exec_ctx, transport, NULL, 0); + + grpc_channel *channel = grpc_channel_create( + &exec_ctx, "test-target", NULL, GRPC_CLIENT_DIRECT_CHANNEL, transport); + grpc_call *call = + grpc_channel_create_call(channel, NULL, 0, cq, "/foo", "localhost", + gpr_inf_future(GPR_CLOCK_REALTIME), NULL); + + grpc_metadata_array initial_metadata_recv; + grpc_metadata_array_init(&initial_metadata_recv); + grpc_byte_buffer *response_payload_recv = NULL; + grpc_metadata_array trailing_metadata_recv; + grpc_metadata_array_init(&trailing_metadata_recv); + grpc_status_code status; + char *details = NULL; + size_t details_capacity = 0; + + grpc_op ops[6]; + grpc_op *op = ops; + op->op = GRPC_OP_SEND_INITIAL_METADATA; + op->data.send_initial_metadata.count = 0; + op->flags = 0; + op->reserved = NULL; + op++; + op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; + op->flags = 0; + op->reserved = NULL; + op++; + op->op = GRPC_OP_RECV_INITIAL_METADATA; + op->data.recv_initial_metadata = &initial_metadata_recv; + op->flags = 0; + op->reserved = NULL; + op++; + op->op = GRPC_OP_RECV_MESSAGE; + op->data.recv_message = &response_payload_recv; + op->flags = 0; + op->reserved = NULL; + op++; + op->op = GRPC_OP_RECV_STATUS_ON_CLIENT; + op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv; + op->data.recv_status_on_client.status = &status; + op->data.recv_status_on_client.status_details = &details; + op->data.recv_status_on_client.status_details_capacity = &details_capacity; + op->flags = 0; + op->reserved = NULL; + op++; + grpc_call_error error = + grpc_call_start_batch(call, ops, (size_t)(op - ops), tag(1), NULL); + int requested_calls = 1; + GPR_ASSERT(GRPC_CALL_OK == error); + + grpc_mock_endpoint_put_read( + &exec_ctx, mock_endpoint, + gpr_slice_from_copied_buffer((const char *)data, size)); + + grpc_event ev; + while (1) { + grpc_exec_ctx_flush(&exec_ctx); + ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL); + switch (ev.type) { + case GRPC_QUEUE_TIMEOUT: + goto done; + case GRPC_QUEUE_SHUTDOWN: + break; + case GRPC_OP_COMPLETE: + requested_calls--; + break; + } + } + +done: + if (requested_calls) { + grpc_call_cancel(call, NULL); + } + for (int i = 0; i < requested_calls; i++) { + ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL); + GPR_ASSERT(ev.type == GRPC_OP_COMPLETE); + } + grpc_completion_queue_shutdown(cq); + for (int i = 0; i < requested_calls; i++) { + ev = grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL); + GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN); + } + grpc_call_destroy(call); + grpc_completion_queue_destroy(cq); + grpc_metadata_array_destroy(&initial_metadata_recv); + grpc_metadata_array_destroy(&trailing_metadata_recv); + gpr_free(details); + grpc_channel_destroy(channel); + if (response_payload_recv != NULL) { + grpc_byte_buffer_destroy(response_payload_recv); + } + grpc_shutdown(); + return 0; +} |